ISSN:
1573-5036
Keywords:
Copper
;
Disc-plough
;
Laminated layer
;
Manganese
;
Nitrogen
;
Nutrient absorption
;
Plough-pan
;
Rotavator
;
Subsoiler
;
Weed
;
Zinc
Source:
Springer Online Journal Archives 1860-2000
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary The mechanism of higher grain production of wheat (Triticum aestivum L.) by four tillage methods was explored on a sandy calcareous soil of Sahl-Al Jafara, Libya, during the year 1976–77. Tillage methods increased grain yield and dry matter weight at the boot stage in the order of no-tillage〈rotovator=disc plough 〈 subsoiler. Rotovation to 15 cm and disc ploughing to 25 cm depth enhanced grain production mainly by eliminating weed competition. In both the cases, roots penetrated 〈 25 cm where plough-pan existed. Further yield increases by 50 cm deep subsoiling seems to be mainly explained by N and Cu rise in plants from their marginal to optimum levels and by reduction of Mn deficiency in plant shoots. Penetration of roots beyond the 25 cm plough-pan apparently resulted in higher absorption of these nutrients from leached or native soil supplies. Subsoiling also resulted in greater Zn concentration in plant shoots which, under marginal to deficient conditions, will also increase grain production.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02277949
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